<template>
  <div>
    <div class="box750">
      <!-- <text class="text">750</text>
      <div class="box640">
        <text class="text">640</text>
        <div class="box480">
          <text class="text">480</text>
        </div>
      </div> -->
    </div>
  </div>
</template>

<style scoped>
  .box750 {
    width: 750px;
    height: 750px;
    background-color: #EEEEEE;
  }
  .box640 {
    width: 640px;
    height: 640px;
    background-color: #CCCCCC;
  }
  .box480 {
    width: 480px;
    height: 480px;
    background-color: #AAAAAA;
  }
  .text {
    font-size: 50px;
  }
</style>